#Unrarx mac chip install#

(3) Run the following script exactly as below (including capitals), press Enter after each line and check that Open Firmware displays 'ok' :ĭev 867000000 encode-int ' clock-frequency' property (2) Insert the unmodified Leopard DVD into the Mac’s DVD drive. (1) Hold the Command, Option, O and F keys together when starting the Mac and only release them once the Open Firmware command line has appeared.

#Unrarx mac chip install#

This can be done either by modifying the OSinstall.mpkg file on the Leopard DVD to make a DVD that will install on any suitable Mac as it if were supported (when burning the DVD, if using a singe-layer disc delete the Xcode Tools package from the Optional Installs folder on the root of the image, as well as the packages in /System/Installation/Packages for all of the printer drivers and all of the foreign languages packs (do not delete AsianLanguageSupport.pkg though, this is not a language pack and will cause the installation to fail if it is not present), or by using an unmodified DVD and running one of the following commands in Open Firmware to temporarily (until next reboot) fake a supported CPU speed: Leopard can run on any older Macs that have a G4 processor and AGP-based graphics, so the 'Sawtooth' Power Mac G4 onwards, simply by circumventing the 867 MHz processor speed check. iMac Core 2 Duo (excluding 'Late 2009' and 'Mid 2010' models)įor easy installation of Leopard on some unsupported G4s (